package com.wkbb.common.utils;


import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;


/**
 * 普通类调用Spring bean对象：
 * 说明：
 * 1、此类需要放到App.java同包或者子包下才能被扫描，否则失效。
 *
 * @author Administrator
 */

@Component
public class SpringUtil implements ApplicationContextAware {


        private static ApplicationContext applicationContext = null;

        @Override
        public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
            if(SpringUtil.applicationContext == null){
                SpringUtil.applicationContext  = applicationContext;
            }
        }


        //获取applicationContext
        public static ApplicationContext getApplicationContext() {
            return applicationContext;
        }

        //通过name获取 Bean.
        public static Object getBean(String name){
            return getApplicationContext().getBean(name);
        }

        //通过class获取Bean.
        public static <T> T getBean(Class<T> clazz){
            return getApplicationContext().getBean(clazz);
        }

        //通过name,以及Clazz返回指定的Bean
        public static <T> T getBean(String name,Class<T> clazz){
            return getApplicationContext().getBean(name, clazz);
        }



}


